/*
- * Copyright (c) 2000-2018 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2020 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
-#if INET
+#if INET
#include <netinet/in_var.h>
#include <netinet/in_gif.h>
#include <netinet/ip_var.h>
-#endif /* INET */
+#endif /* INET */
#if INET6
#include <netinet6/in6_var.h>
#include <security/mac_framework.h>
#endif
-#define GIFNAME "gif"
-#define GIFDEV "if_gif"
+#define GIFNAME "gif"
+#define GIFDEV "if_gif"
-#define GIF_MAXUNIT IF_MAXUNIT
-#define GIF_ZONE_MAX_ELEM MIN(IFNETS_MAX, GIF_MAXUNIT)
+#define GIF_MAXUNIT IF_MAXUNIT
+#define GIF_ZONE_MAX_ELEM MIN(IFNETS_MAX, GIF_MAXUNIT)
/* gif lock variables */
-static lck_grp_t *gif_mtx_grp;
-static lck_grp_attr_t *gif_mtx_grp_attr;
-static lck_attr_t *gif_mtx_attr;
+static lck_grp_t *gif_mtx_grp;
+static lck_grp_attr_t *gif_mtx_grp_attr;
+static lck_attr_t *gif_mtx_attr;
decl_lck_mtx_data(static, gif_mtx_data);
-static lck_mtx_t *gif_mtx = &gif_mtx_data;
+static lck_mtx_t *gif_mtx = &gif_mtx_data;
TAILQ_HEAD(gifhead, gif_softc) gifs = TAILQ_HEAD_INITIALIZER(gifs);
mbuf_t m, char *frame_header);
static errno_t gif_ioctl(ifnet_t ifp, u_long cmd, void *data);
-static int ngif = 0; /* number of interfaces */
+static int ngif = 0; /* number of interfaces */
#if INET
static struct protosw in_gif_protosw =
{
- .pr_type = SOCK_RAW,
- .pr_protocol = 0, /* IPPROTO_IPV[46] */
- .pr_flags = PR_ATOMIC|PR_ADDR,
- .pr_input = in_gif_input,
- .pr_usrreqs = &rip_usrreqs,
- .pr_unlock = rip_unlock,
+ .pr_type = SOCK_RAW,
+ .pr_protocol = 0, /* IPPROTO_IPV[46] */
+ .pr_flags = PR_ATOMIC | PR_ADDR,
+ .pr_input = in_gif_input,
+ .pr_usrreqs = &rip_usrreqs,
+ .pr_unlock = rip_unlock,
};
#endif
#if INET6
static struct ip6protosw in6_gif_protosw =
{
- .pr_type = SOCK_RAW,
- .pr_protocol = 0, /* IPPROTO_IPV[46] */
- .pr_flags = PR_ATOMIC|PR_ADDR,
- .pr_input = in6_gif_input,
- .pr_usrreqs = &rip6_usrreqs,
- .pr_unlock = rip_unlock,
+ .pr_type = SOCK_RAW,
+ .pr_protocol = 0, /* IPPROTO_IPV[46] */
+ .pr_flags = PR_ATOMIC | PR_ADDR,
+ .pr_input = in6_gif_input,
+ .pr_usrreqs = &rip6_usrreqs,
+ .pr_unlock = rip_unlock,
};
#endif
static struct if_clone gif_cloner =
IF_CLONE_INITIALIZER(GIFNAME, gif_clone_create, gif_clone_destroy,
- 0, GIF_MAXUNIT, GIF_ZONE_MAX_ELEM, sizeof(struct gif_softc));
+ 0, GIF_MAXUNIT, GIF_ZONE_MAX_ELEM, sizeof(struct gif_softc));
/*
* Theory of operation: initially, one gif interface is created.
* Any time a gif interface is configured, if there are no other
*protocol_family = sc->gif_proto;
GIF_UNLOCK(sc);
- return (0);
+ return 0;
}
static errno_t
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
- if (sc->gif_proto != 0)
+ if (sc->gif_proto != 0) {
printf("gif_add_proto: request add_proto for gif%d\n",
ifnet_unit(ifp));
+ }
sc->gif_proto = protocol_family;
GIF_UNLOCK(sc);
- return (0);
+ return 0;
}
static errno_t
struct gif_softc *sc = ifnet_softc(ifp);
GIF_LOCK(sc);
- if (sc->gif_proto == protocol_family)
+ if (sc->gif_proto == protocol_family) {
sc->gif_proto = 0;
+ }
GIF_UNLOCK(sc);
- return (0);
+ return 0;
}
/* Glue code to attach inet to a gif interface through DLIL */
struct ifnet_attach_proto_param reg;
errno_t stat;
- bzero(®, sizeof (reg));
+ bzero(®, sizeof(reg));
reg.input = gif_input;
stat = ifnet_attach_protocol(ifp, protocol_family, ®);
fam=%d\n", protocol_family);
}
- return (stat);
+ return stat;
}
/* Function to setup the first gif interface */
/* Register protocol registration functions */
result = proto_register_plumber(PF_INET, APPLE_IF_FAM_GIF,
gif_attach_proto_family, NULL);
- if (result != 0)
+ if (result != 0) {
printf("proto_register_plumber failed for AF_INET error=%d\n",
result);
+ }
result = proto_register_plumber(PF_INET6, APPLE_IF_FAM_GIF,
gif_attach_proto_family, NULL);
- if (result != 0)
+ if (result != 0) {
printf("proto_register_plumber failed for AF_INET6 error=%d\n",
result);
+ }
result = if_clone_attach(&gif_cloner);
- if (result != 0)
+ if (result != 0) {
panic("%s: if_clone_attach() failed, error %d\n", __func__, result);
+ }
gif_clone_create(&gif_cloner, 0, NULL);
}
sc->tap_callback = callback;
GIF_UNLOCK(sc);
- return (0);
+ return 0;
}
static void
}
/* use the interface name as the unique id for ifp recycle */
- snprintf(sc->gif_ifname, sizeof (sc->gif_ifname), "%s%d",
+ snprintf(sc->gif_ifname, sizeof(sc->gif_ifname), "%s%d",
ifc->ifc_name, unit);
lck_mtx_init(&sc->gif_lock, gif_mtx_grp, gif_mtx_attr);
- bzero(&gif_init_params, sizeof (gif_init_params));
+ bzero(&gif_init_params, sizeof(gif_init_params));
gif_init_params.ver = IFNET_INIT_CURRENT_VERSION;
- gif_init_params.len = sizeof (gif_init_params);
+ gif_init_params.len = sizeof(gif_init_params);
gif_init_params.flags = IFNET_INIT_LEGACY;
gif_init_params.uniqueid = sc->gif_ifname;
gif_init_params.uniqueid_len = strlen(sc->gif_ifname);
sc->encap_cookie4 = sc->encap_cookie6 = NULL;
#if INET
sc->encap_cookie4 = encap_attach_func(AF_INET, -1,
- gif_encapcheck, &in_gif_protosw, sc);
+ gif_encapcheck, &in_gif_protosw, sc);
if (sc->encap_cookie4 == NULL) {
printf("%s: unable to attach encap4\n", if_name(sc->gif_if));
ifnet_release(sc->gif_if);
#if CONFIG_MACF_NET
mac_ifnet_label_init(&sc->gif_if);
#endif
- bpfattach(sc->gif_if, DLT_NULL, sizeof (u_int));
+ bpfattach(sc->gif_if, DLT_NULL, sizeof(u_int));
sc->gif_flags &= ~IFGIF_DETACHING;
TAILQ_INSERT_TAIL(&gifs, sc, gif_link);
ngif++;
done:
lck_mtx_unlock(gif_mtx);
- return (error);
+ return error;
}
static int
{
int error = 0;
struct gif_softc *sc = NULL;
+ const struct encaptab *encap_cookie4 = NULL;
+ const struct encaptab *encap_cookie6 = NULL;
lck_mtx_lock(gif_mtx);
sc = ifp->if_softc;
gif_delete_tunnel(sc);
#ifdef INET6
- if (sc->encap_cookie6 != NULL) {
- error = encap_detach(sc->encap_cookie6);
- KASSERT(error == 0, ("gif_clone_destroy: Unexpected "
- "error detaching encap_cookie6"));
- }
+ encap_cookie6 = sc->encap_cookie6;
#endif
#ifdef INET
- if (sc->encap_cookie4 != NULL) {
- error = encap_detach(sc->encap_cookie4);
- KASSERT(error == 0, ("gif_clone_destroy: Unexpected "
- "error detaching encap_cookie4"));
- }
+ encap_cookie4 = sc->encap_cookie4;
#endif
done:
- if (sc != NULL)
+ if (sc != NULL) {
GIF_UNLOCK(sc);
+ }
lck_mtx_unlock(gif_mtx);
- return (error);
+ if (encap_cookie6 != NULL) {
+ error = encap_detach(encap_cookie6);
+ KASSERT(error == 0, ("gif_clone_destroy: Unexpected "
+ "error detaching encap_cookie6"));
+ }
+
+ if (encap_cookie4 != NULL) {
+ error = encap_detach(encap_cookie4);
+ KASSERT(error == 0, ("gif_clone_destroy: Unexpected "
+ "error detaching encap_cookie4"));
+ }
+
+ return error;
}
static int
error = gif_remove(ifp);
if (error != 0) {
printf("gif_clone_destroy: gif remove failed %d\n", error);
- return (error);
+ return error;
}
error = ifnet_set_flags(ifp, 0, IFF_UP);
}
error = ifnet_detach(ifp);
- if (error != 0)
+ if (error != 0) {
panic("gif_clone_destroy: ifnet_detach(%p) failed %d\n", ifp,
error);
- return (0);
+ }
+ return 0;
}
static int
struct gif_softc *sc;
sc = (struct gif_softc *)arg;
- if (sc == NULL)
- return (error);
+ if (sc == NULL) {
+ return error;
+ }
GIF_LOCK(sc);
- if ((ifnet_flags(sc->gif_if) & IFF_UP) == 0)
+ if ((ifnet_flags(sc->gif_if) & IFF_UP) == 0) {
goto done;
+ }
/* no physical address */
- if (!sc->gif_psrc || !sc->gif_pdst)
+ if (!sc->gif_psrc || !sc->gif_pdst) {
goto done;
+ }
switch (proto) {
#if INET
goto done;
}
- mbuf_copydata((struct mbuf *)(size_t)m, 0, sizeof (ip), &ip);
+ mbuf_copydata((struct mbuf *)(size_t)m, 0, sizeof(ip), &ip);
switch (ip.ip_v) {
#if INET
case 4:
if (sc->gif_psrc->sa_family != AF_INET ||
- sc->gif_pdst->sa_family != AF_INET)
+ sc->gif_pdst->sa_family != AF_INET) {
goto done;
+ }
error = gif_encapcheck4(m, off, proto, arg);
#endif
#if INET6
case 6:
if (sc->gif_psrc->sa_family != AF_INET6 ||
- sc->gif_pdst->sa_family != AF_INET6)
+ sc->gif_pdst->sa_family != AF_INET6) {
goto done;
+ }
error = gif_encapcheck6(m, off, proto, arg);
#endif
default:
}
done:
GIF_UNLOCK(sc);
- return (error);
+ return error;
}
static errno_t
* because there is no guaruntee that we won't be called
* concurrently from more than one thread.
*/
- m->m_flags &= ~(M_BCAST|M_MCAST);
+ m->m_flags &= ~(M_BCAST | M_MCAST);
if (!(ifnet_flags(ifp) & IFF_UP) ||
gif_psrc == NULL || gif_pdst == NULL) {
ifnet_touch_lastchange(ifp);
- m_freem(m); /* free it here not in dlil_output */
+ m_freem(m); /* free it here not in dlil_output */
error = ENETDOWN;
goto end;
}
- bpf_tap_out(ifp, 0, m, &sc->gif_proto, sizeof (sc->gif_proto));
+ bpf_tap_out(ifp, 0, m, &sc->gif_proto, sizeof(sc->gif_proto));
GIF_LOCK(sc);
/* XXX should we check if our outer source is legal? */
+ /*
+ * Save the length as m may be free by the output functions
+ * as they call m_pullup
+ */
+ u_int32_t bytes_out = m->m_pkthdr.len;
+
/* dispatch to output logic based on outer AF */
switch (sc->gif_psrc->sa_family) {
#if INET
}
GIF_UNLOCK(sc);
-end:
+end:
if (error) {
/* the mbuf was freed either by in_gif_output or in here */
ifnet_stat_increment_out(ifp, 0, 0, 1);
} else {
- ifnet_stat_increment_out(ifp, 1, m->m_pkthdr.len, 0);
+ ifnet_stat_increment_out(ifp, 1, bytes_out, 0);
}
- if (error == 0)
+ if (error == 0) {
error = EJUSTRETURN; /* if no error, packet got sent already */
- return (error);
+ }
+ return error;
}
/*
{
struct gif_softc *sc = ifnet_softc(ifp);
- bpf_tap_in(ifp, 0, m, &sc->gif_proto, sizeof (sc->gif_proto));
+ bpf_tap_in(ifp, 0, m, &sc->gif_proto, sizeof(sc->gif_proto));
/*
* Put the packet to the network layer input queue according to the
* it occurs more times than we thought, we may change the policy
* again.
*/
- int32_t pktlen = m->m_pkthdr.len;
+ int32_t pktlen = m->m_pkthdr.len;
if (proto_input(protocol_family, m) != 0) {
ifnet_stat_increment_in(ifp, 0, 0, 1);
m_freem(m);
- } else {
+ } else {
ifnet_stat_increment_in(ifp, 1, pktlen, 0);
- }
+ }
- return (0);
+ return 0;
}
/* XXX how should we handle IPv6 scope on SIOC[GS]IFPHYADDR? */
static errno_t
gif_ioctl(
- ifnet_t ifp,
- u_long cmd,
- void *data)
+ ifnet_t ifp,
+ u_long cmd,
+ void *data)
{
struct gif_softc *sc = ifnet_softc(ifp);
struct ifreq *ifr = (struct ifreq *)data;
case SIOCDELMULTI:
break;
-#ifdef SIOCSIFMTU /* xxx */
+#ifdef SIOCSIFMTU /* xxx */
case SIOCGIFMTU:
break;
case SIOCSIFMTU:
- {
- u_int32_t mtu;
- mtu = ifr->ifr_mtu;
- if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
- return (EINVAL);
- }
- ifnet_set_mtu(ifp, mtu);
+ {
+ u_int32_t mtu;
+ mtu = ifr->ifr_mtu;
+ if (mtu < GIF_MTU_MIN || mtu > GIF_MTU_MAX) {
+ return EINVAL;
}
- break;
+ ifnet_set_mtu(ifp, mtu);
+ }
+ break;
#endif /* SIOCSIFMTU */
case SIOCSIFPHYADDR:
#if INET
case SIOCSIFPHYADDR:
src = (struct sockaddr *)
- &(((struct in_aliasreq *)data)->ifra_addr);
+ &(((struct in_aliasreq *)data)->ifra_addr);
dst = (struct sockaddr *)
- &(((struct in_aliasreq *)data)->ifra_dstaddr);
+ &(((struct in_aliasreq *)data)->ifra_dstaddr);
break;
#endif
#if INET6
}
/* sa_family must be equal */
- if (src->sa_family != dst->sa_family)
- return (EINVAL);
+ if (src->sa_family != dst->sa_family) {
+ return EINVAL;
+ }
/* validate sa_len */
switch (src->sa_family) {
#if INET
case AF_INET:
- if (src->sa_len != sizeof (struct sockaddr_in))
- return (EINVAL);
+ if (src->sa_len != sizeof(struct sockaddr_in)) {
+ return EINVAL;
+ }
break;
#endif
#if INET6
case AF_INET6:
- if (src->sa_len != sizeof (struct sockaddr_in6))
- return (EINVAL);
+ if (src->sa_len != sizeof(struct sockaddr_in6)) {
+ return EINVAL;
+ }
break;
#endif
default:
- return (EAFNOSUPPORT);
+ return EAFNOSUPPORT;
}
switch (dst->sa_family) {
#if INET
case AF_INET:
- if (dst->sa_len != sizeof (struct sockaddr_in))
- return (EINVAL);
+ if (dst->sa_len != sizeof(struct sockaddr_in)) {
+ return EINVAL;
+ }
break;
#endif
#if INET6
case AF_INET6:
- if (dst->sa_len != sizeof (struct sockaddr_in6))
- return (EINVAL);
+ if (dst->sa_len != sizeof(struct sockaddr_in6)) {
+ return EINVAL;
+ }
break;
#endif
default:
- return (EAFNOSUPPORT);
+ return EAFNOSUPPORT;
}
/* check sa_family looks sane for the cmd */
switch (cmd) {
case SIOCSIFPHYADDR:
- if (src->sa_family == AF_INET)
+ if (src->sa_family == AF_INET) {
break;
- return (EAFNOSUPPORT);
+ }
+ return EAFNOSUPPORT;
#if INET6
case SIOCSIFPHYADDR_IN6_32:
case SIOCSIFPHYADDR_IN6_64:
- if (src->sa_family == AF_INET6)
+ if (src->sa_family == AF_INET6) {
break;
- return (EAFNOSUPPORT);
+ }
+ return EAFNOSUPPORT;
#endif /* INET6 */
}
-#define GIF_ORDERED_LOCK(sc, sc2) \
- if (sc < sc2) { \
- GIF_LOCK(sc); \
- GIF_LOCK(sc2); \
- } else { \
- GIF_LOCK(sc2); \
- GIF_LOCK(sc); \
+#define GIF_ORDERED_LOCK(sc, sc2) \
+ if (sc < sc2) { \
+ GIF_LOCK(sc); \
+ GIF_LOCK(sc2); \
+ } else { \
+ GIF_LOCK(sc2); \
+ GIF_LOCK(sc); \
}
-#define GIF_ORDERED_UNLOCK(sc, sc2) \
- if (sc > sc2) { \
- GIF_UNLOCK(sc); \
- GIF_UNLOCK(sc2); \
- } else { \
- GIF_UNLOCK(sc2); \
- GIF_UNLOCK(sc); \
+#define GIF_ORDERED_UNLOCK(sc, sc2) \
+ if (sc > sc2) { \
+ GIF_UNLOCK(sc); \
+ GIF_UNLOCK(sc2); \
+ } else { \
+ GIF_UNLOCK(sc2); \
+ GIF_UNLOCK(sc); \
}
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp2, &ifnet_head, if_link) {
- if (strcmp(ifnet_name(ifp2), GIFNAME) != 0)
+ if (strcmp(ifnet_name(ifp2), GIFNAME) != 0) {
continue;
+ }
sc2 = ifnet_softc(ifp2);
- if (sc2 == sc)
+ if (sc2 == sc) {
continue;
+ }
/* lock sc and sc2 in increasing order of ifnet index */
GIF_ORDERED_LOCK(sc, sc2);
if (!sc2->gif_pdst || !sc2->gif_psrc) {
#endif
/* can't configure multiple multi-dest interfaces */
-#define multidest(x) \
+#define multidest(x) \
(((struct sockaddr_in *)(void *)(x))->sin_addr.s_addr == INADDR_ANY)
#if INET6
-#define multidest6(x) \
- (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *) \
+#define multidest6(x) \
+ (IN6_IS_ADDR_UNSPECIFIED(&((struct sockaddr_in6 *) \
(void *)(x))->sin6_addr))
#endif
if (dst->sa_family == AF_INET &&
ifnet_head_done();
GIF_LOCK(sc);
- if (sc->gif_psrc)
- FREE((caddr_t)sc->gif_psrc, M_IFADDR);
+ if (sc->gif_psrc) {
+ FREE(sc->gif_psrc, M_IFADDR);
+ }
sa = (struct sockaddr *)_MALLOC(src->sa_len, M_IFADDR,
M_WAITOK);
if (sa == NULL) {
GIF_UNLOCK(sc);
- return (ENOBUFS);
+ return ENOBUFS;
}
bcopy((caddr_t)src, (caddr_t)sa, src->sa_len);
sc->gif_psrc = sa;
- if (sc->gif_pdst)
- FREE((caddr_t)sc->gif_pdst, M_IFADDR);
+ if (sc->gif_pdst) {
+ FREE(sc->gif_pdst, M_IFADDR);
+ }
sa = (struct sockaddr *)_MALLOC(dst->sa_len, M_IFADDR,
M_WAITOK);
if (sa == NULL) {
GIF_UNLOCK(sc);
- return (ENOBUFS);
+ return ENOBUFS;
}
bcopy((caddr_t)dst, (caddr_t)sa, dst->sa_len);
sc->gif_pdst = sa;
case SIOCDIFPHYADDR:
GIF_LOCK(sc);
if (sc->gif_psrc) {
- FREE((caddr_t)sc->gif_psrc, M_IFADDR);
+ FREE(sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
}
if (sc->gif_pdst) {
- FREE((caddr_t)sc->gif_pdst, M_IFADDR);
+ FREE(sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
GIF_UNLOCK(sc);
#if INET
case SIOCGIFPSRCADDR:
dst = &ifr->ifr_addr;
- size = sizeof (ifr->ifr_addr);
+ size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#if INET6
case SIOCGIFPSRCADDR_IN6:
dst = (struct sockaddr *)
- &(((struct in6_ifreq *)data)->ifr_addr);
- size = sizeof (((struct in6_ifreq *)data)->ifr_addr);
+ &(((struct in6_ifreq *)data)->ifr_addr);
+ size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
}
if (src->sa_len > size) {
GIF_UNLOCK(sc);
- return (EINVAL);
+ return EINVAL;
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
GIF_UNLOCK(sc);
#if INET
case SIOCGIFPDSTADDR:
dst = &ifr->ifr_addr;
- size = sizeof (ifr->ifr_addr);
+ size = sizeof(ifr->ifr_addr);
break;
#endif /* INET */
#if INET6
case SIOCGIFPDSTADDR_IN6:
dst = (struct sockaddr *)
- &(((struct in6_ifreq *)data)->ifr_addr);
- size = sizeof (((struct in6_ifreq *)data)->ifr_addr);
+ &(((struct in6_ifreq *)data)->ifr_addr);
+ size = sizeof(((struct in6_ifreq *)data)->ifr_addr);
break;
#endif /* INET6 */
default:
}
if (src->sa_len > size) {
GIF_UNLOCK(sc);
- return (EINVAL);
+ return EINVAL;
}
bcopy((caddr_t)src, (caddr_t)dst, src->sa_len);
GIF_UNLOCK(sc);
break;
}
bad:
- return (error);
+ return error;
}
static void
{
GIF_LOCK_ASSERT(sc);
if (sc->gif_psrc) {
- FREE((caddr_t)sc->gif_psrc, M_IFADDR);
+ FREE(sc->gif_psrc, M_IFADDR);
sc->gif_psrc = NULL;
}
if (sc->gif_pdst) {
- FREE((caddr_t)sc->gif_pdst, M_IFADDR);
+ FREE(sc->gif_pdst, M_IFADDR);
sc->gif_pdst = NULL;
}
ROUTE_RELEASE(&sc->gif_ro);
projects / apple / xnu.git / blobdiff